fig4
From: Enhanced efficiency of Sb2S3 solar cells via heterojunction interfacial MgCl2-CdCl2 mixed treatment
Figure 4. XPS spectra of (A) Mg 2p, (B) Cd 3d, and (C) S 2p. (D) and (G) AFM images; (E) and (H) KPFM images; (F) and (I) statistical potential distributions of CdCl2 and MgCl2-M treated CdS films. XPS: X-ray photoelectron spectroscopy; KPFM: Kelvin probe force microscopy; CdS: cadmium sulfide; SPV: surface photovoltage; AFM: atomic force microscope.
